Twitter-Bootstrap: due pulsanti di interruzione a discesa affiancati non funzionano correttamente

Question

Introduzione: Una delle parti del mio sito Web richiede una piccola barra degli strumenti con due menu a discesa affiancati. Ho cercato di raggiungere questo obiettivo il seguente codice (semplificato):

<div class="btn-group"> 
    <button class="btn btn-mini dropdown-toggle" data-toggle="dropdown"> 
     <span id="uniqueId">Text1</span> <span class="caret"></span> 
    </button> 
    <ul class="dropdown-menu"> 
     <li><a onclick="javascript:someFunction()">Item1</a></li> 
     <li><a onclick="javascript:someFunction()">Item2</a></li> 
     ... 
    </ul> 
    <button class="btn btn-mini dropdown-toggle" data-toggle="dropdown"> 
     <span id="uniqueId2">Text2</span> <span class="caret"></span> 
    </button> 
    <ul class="dropdown-menu"> 
     <li><a onclick="javascript:someOtherFunction()">Item1</a></li> 
     <li><a onclick="javascript:someOtherFunction()">Item2</a></li> 
     ... 
    </ul> 
</div> 

mi piacerebbe ottenere un bel dall'aspetto due pulsanti della barra con gli angoli arrotondati solo sui lati esterni della barra degli strumenti.

Problema:

Quando clicco su uno dei due pulsanti, entrambi i pulsanti vengono visualizzati come "pressato" e non può distinguere visivamente quale ho appena cliccato. Tutte le altre funzionalità funzionano correttamente, ad esempio un menu viene visualizzato correttamente e con le opzioni corrette.

C'è un modo per rendere quei pulsanti che cambiano i loro stili separatamente?

Aggiornamento:

so che è molto bene possibile per ottenere questo lavoro, dividendo i miei bottoni in due btn-group s o (come suggerito @Sherbrow) utilizzando div. Bootstrap documentation suggerisce anche

pulsanti con il menu a discesa devono essere avvolti individualmente nel proprio .btn-gruppo all'interno di un .btn-barra degli strumenti per una corretta rappresentazione.

e mi piacerebbe sapere - è possibile in qualche modo evitare questo involucro individuale e avere due dropdown che si comportano correttamente all'interno di un singolo gruppo btn?

Penso che sto chiedendo un comportamento non standard e non documentato e accetterò una risposta "impossibile" se nessuno può suggerire un modo per farlo.

Answer 1

Hai dimenticato il tuo wrapper .dropdown.

Aggiornamento 2: è stato dimenticato un codice per i gruppi. E fatto un

Aggiornamento: fatto un involucro migliore, e lo stile come pulsanti. Questo è fondamentalmente un altro stile del pulsante, ma senza il bagaglio della classe .btn.

<div class="btn-group"> 
    <div class="dropdown dropdown-btn"> 
     <div class="dropdown-toggle" data-toggle="dropdown"> 
      <span id="uniqueId">Text1</span><span class="caret"/> 
     </div > 
     <ul class="dropdown-menu"> 
      <li><a onclick="javascript:someFunction()">Item1</a></li> 
      <li><a onclick="javascript:someFunction()">Item2</a></li> 
      <!-- ... --> 
     </ul> 
    </div> 
    <div class="dropdown dropdown-btn"> 
     <div class="dropdown-toggle" data-toggle="dropdown"> 
      <span id="uniqueId2">Text2</span><span class="caret"/> 
     </div > 
     <ul class="dropdown-menu"> 
      <li><a onclick="javascript:someOtherFunction()">Item1</a></li> 
      <li><a onclick="javascript:someOtherFunction()">Item2</a></li> 
      <!-- ... --> 
     </ul> 
    </div> 
</div> 

con una grande regolazione css (buttons.less e button-groups.less riutilizzato cambiando .btn a .dropdown-btn da here (github)):

.dropdown-btn { 
    display: inline-block; 
    *display: inline; 
    /* IE7 inline-block hack */ 
    *zoom: 1; 
    padding: 4px 10px 4px; 
    margin-bottom: 0; 
    font-size: 13px; 
    line-height: 18px; 
    *line-height: 20px; 
    color: #333333; 
    text-align: center; 
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75); 
    vertical-align: middle; 
    cursor: pointer; 
    background-color: #f5f5f5; 
    background-image: -moz-linear-gradient(top, #ffffff, #e6e6e6); 
    background-image: -ms-linear-gradient(top, #ffffff, #e6e6e6); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#e6e6e6)); 
    background-image: -webkit-linear-gradient(top, #ffffff, #e6e6e6); 
    background-image: -o-linear-gradient(top, #ffffff, #e6e6e6); 
    background-image: linear-gradient(top, #ffffff, #e6e6e6); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#e6e6e6', GradientType=0); 
    border-color: #e6e6e6 #e6e6e6 #bfbfbf; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #e6e6e6; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
    border: 1px solid #cccccc; 
    *border: 0; 
    border-bottom-color: #b3b3b3; 
    -webkit-border-radius: 4px; 
    -moz-border-radius: 4px; 
    border-radius: 4px; 
    *margin-left: .3em; 
    -webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05); 
    -moz-box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05); 
    box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05); 
} 
.dropdown-btn:hover, 
.dropdown-btn:active, 
.dropdown-btn.active, 
.dropdown-btn.disabled, 
.dropdown-btn[disabled] { 
    background-color: #e6e6e6; 
    *background-color: #d9d9d9; 
} 
.dropdown-btn:active, 
.dropdown-btn.active { background-color: #cccccc \9 } 
.dropdown-btn:first-child { *margin-left: 0 } 
.dropdown-btn:hover { 
    color: #333333; 
    text-decoration: none; 
    background-color: #e6e6e6; 
    *background-color: #d9d9d9; 
    /* Buttons in IE7 don't get borders, so darken on hover */ 
    background-position: 0 -15px; 
    -webkit-transition: background-position 0.1s linear; 
    -moz-transition: background-position 0.1s linear; 
    -ms-transition: background-position 0.1s linear; 
    -o-transition: background-position 0.1s linear; 
    transition: background-position 0.1s linear; 
} 
.dropdown-btn:focus { 
    outline: thin dotted #333; 
    outline: 5px auto -webkit-focus-ring-color; 
    outline-offset: -2px; 
} 
.dropdown-btn.active, 
.dropdown-btn:active { 
    background-color: #e6e6e6; 
    background-color: #d9d9d9 \9; 
    background-image: none; 
    outline: 0; 
    -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05); 
    -moz-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05); 
    box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05); 
} 
.dropdown-btn.disabled, 
.dropdown-btn[disabled] { 
    cursor: default; 
    background-color: #e6e6e6; 
    background-image: none; 
    opacity: 0.65; 
    filter: alpha(opacity=65); 
    -webkit-box-shadow: none; 
    -moz-box-shadow: none; 
    box-shadow: none; 
} 
.dropdown-btn-large { 
    padding: 9px 14px; 
    font-size: 15px; 
    line-height: normal; 
    -webkit-border-radius: 5px; 
    -moz-border-radius: 5px; 
    border-radius: 5px; 
} 
.dropdown-btn-large [class^="icon-"] { margin-top: 1px } 
.dropdown-btn-small { 
    padding: 5px 9px; 
    font-size: 11px; 
    line-height: 16px; 
} 
.dropdown-btn-small [class^="icon-"] { margin-top: -1px } 
.dropdown-btn-mini { 
    padding: 2px 6px; 
    font-size: 11px; 
    line-height: 14px; 
} 
.dropdown-btn-primary, 
.dropdown-btn-primary:hover, 
.dropdown-btn-warning, 
.dropdown-btn-warning:hover, 
.dropdown-btn-danger, 
.dropdown-btn-danger:hover, 
.dropdown-btn-success, 
.dropdown-btn-success:hover, 
.dropdown-btn-info, 
.dropdown-btn-info:hover, 
.dropdown-btn-inverse, 
.dropdown-btn-inverse:hover { 
    color: #ffffff; 
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25); 
} 
.dropdown-btn-primary.active, 
.dropdown-btn-warning.active, 
.dropdown-btn-danger.active, 
.dropdown-btn-success.active, 
.dropdown-btn-info.active, 
.dropdown-btn-inverse.active { color: rgba(255, 255, 255, 0.75) } 
.dropdown-btn { 
    border-color: #ccc; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
} 
.dropdown-btn-primary { 
    background-color: #0074cc; 
    background-image: -moz-linear-gradient(top, #0088cc, #0055cc); 
    background-image: -ms-linear-gradient(top, #0088cc, #0055cc); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#0088cc), to(#0055cc)); 
    background-image: -webkit-linear-gradient(top, #0088cc, #0055cc); 
    background-image: -o-linear-gradient(top, #0088cc, #0055cc); 
    background-image: linear-gradient(top, #0088cc, #0055cc); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#0088cc', endColorstr='#0055cc', GradientType=0); 
    border-color: #0055cC#0055cC#003580; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #0055cc; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
} 
.dropdown-btn-primary:hover, 
.dropdown-btn-primary:active, 
.dropdown-btn-primary.active, 
.dropdown-btn-primary.disabled, 
.dropdown-btn-primary[disabled] { 
    background-color: #0055cc; 
    *background-color: #004ab3; 
} 
.dropdown-btn-primary:active, 
.dropdown-btn-primary.active { background-color: #004099 \9 } 
.dropdown-btn-warning { 
    background-color: #faa732; 
    background-image: -moz-linear-gradient(top, #fbb450, #f89406); 
    background-image: -ms-linear-gradient(top, #fbb450, #f89406); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#fbb450), to(#f89406)); 
    background-image: -webkit-linear-gradient(top, #fbb450, #f89406); 
    background-image: -o-linear-gradient(top, #fbb450, #f89406); 
    background-image: linear-gradient(top, #fbb450, #f89406); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fbb450', endColorstr='#f89406', GradientType=0); 
    border-color: #f89406 #f89406 #ad6704; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #f89406; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
} 
.dropdown-btn-warning:hover, 
.dropdown-btn-warning:active, 
.dropdown-btn-warning.active, 
.dropdown-btn-warning.disabled, 
.dropdown-btn-warning[disabled] { 
    background-color: #f89406; 
    *background-color: #df8505; 
} 
.dropdown-btn-warning:active, 
.dropdown-btn-warning.active { background-color: #c67605 \9 } 
.dropdown-btn-danger { 
    background-color: #da4f49; 
    background-image: -moz-linear-gradient(top, #ee5f5b, #bd362f); 
    background-image: -ms-linear-gradient(top, #ee5f5b, #bd362f); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ee5f5b), to(#bd362f)); 
    background-image: -webkit-linear-gradient(top, #ee5f5b, #bd362f); 
    background-image: -o-linear-gradient(top, #ee5f5b, #bd362f); 
    background-image: linear-gradient(top, #ee5f5b, #bd362f); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ee5f5b', endColorstr='#bd362f', GradientType=0); 
    border-color: #bd362f #bd362f #802420; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #bd362f; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
} 
.dropdown-btn-danger:hover, 
.dropdown-btn-danger:active, 
.dropdown-btn-danger.active, 
.dropdown-btn-danger.disabled, 
.dropdown-btn-danger[disabled] { 
    background-color: #bd362f; 
    *background-color: #a9302a; 
} 
.dropdown-btn-danger:active, 
.dropdown-btn-danger.active { background-color: #942a25 \9 } 
.dropdown-btn-success { 
    background-color: #5bb75b; 
    background-image: -moz-linear-gradient(top, #62c462, #51a351); 
    background-image: -ms-linear-gradient(top, #62c462, #51a351); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#62c462), to(#51a351)); 
    background-image: -webkit-linear-gradient(top, #62c462, #51a351); 
    background-image: -o-linear-gradient(top, #62c462, #51a351); 
    background-image: linear-gradient(top, #62c462, #51a351); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#62c462', endColorstr='#51a351', GradientType=0); 
    border-color: #51a351 #51a351 #387038; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #51a351; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
} 
.dropdown-btn-success:hover, 
.dropdown-btn-success:active, 
.dropdown-btn-success.active, 
.dropdown-btn-success.disabled, 
.dropdown-btn-success[disabled] { 
    background-color: #51a351; 
    *background-color: #499249; 
} 
.dropdown-btn-success:active, 
.dropdown-btn-success.active { background-color: #408140 \9 } 
.dropdown-btn-info { 
    background-color: #49afcd; 
    background-image: -moz-linear-gradient(top, #5bc0de, #2f96b4); 
    background-image: -ms-linear-gradient(top, #5bc0de, #2f96b4); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#5bc0de), to(#2f96b4)); 
    background-image: -webkit-linear-gradient(top, #5bc0de, #2f96b4); 
    background-image: -o-linear-gradient(top, #5bc0de, #2f96b4); 
    background-image: linear-gradient(top, #5bc0de, #2f96b4); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#5bc0de', endColorstr='#2f96b4', GradientType=0); 
    border-color: #2f96b4 #2f96b4 #1f6377; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #2f96b4; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
} 
.dropdown-btn-info:hover, 
.dropdown-btn-info:active, 
.dropdown-btn-info.active, 
.dropdown-btn-info.disabled, 
.dropdown-btn-info[disabled] { 
    background-color: #2f96b4; 
    *background-color: #2a85a0; 
} 
.dropdown-btn-info:active, 
.dropdown-btn-info.active { background-color: #24748c \9 } 
.dropdown-btn-inverse { 
    background-color: #414141; 
    background-image: -moz-linear-gradient(top, #555555, #222222); 
    background-image: -ms-linear-gradient(top, #555555, #222222); 
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#555555), to(#222222)); 
    background-image: -webkit-linear-gradient(top, #555555, #222222); 
    background-image: -o-linear-gradient(top, #555555, #222222); 
    background-image: linear-gradient(top, #555555, #222222); 
    background-repeat: repeat-x; 
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#555555', endColorstr='#222222', GradientType=0); 
    border-color: #222222 #222222 #000000; 
    border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25); 
    *background-color: #222222; 
    /* Darken IE7 buttons by default so they stand out more given they won't have borders */ 
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false); 
} 
.dropdown-btn-inverse:hover, 
.dropdown-btn-inverse:active, 
.dropdown-btn-inverse.active, 
.dropdown-btn-inverse.disabled, 
.dropdown-btn-inverse[disabled] { 
    background-color: #222222; 
    *background-color: #151515; 
} 
.dropdown-btn-inverse:active, 
.dropdown-btn-inverse.active { background-color: #080808 \9 } 
button.dropdown-btn, 
input[type="submit"].dropdown-btn { 
    *padding-top: 2px; 
    *padding-bottom: 2px; 
} 
button.dropdown-btn::-moz-focus-inner, 
input[type="submit"].dropdown-btn::-moz-focus-inner { 
    padding: 0; 
    border: 0; 
} 
button.dropdown-btn.dropdown-btn-large, 
input[type="submit"].dropdown-btn.dropdown-btn-large { 
    *padding-top: 7px; 
    *padding-bottom: 7px; 
} 
button.dropdown-btn.dropdown-btn-small, 
input[type="submit"].dropdown-btn.dropdown-btn-small { 
    *padding-top: 3px; 
    *padding-bottom: 3px; 
} 
button.dropdown-btn.dropdown-btn-mini, 
input[type="submit"].dropdown-btn.dropdown-btn-mini { 
    *padding-top: 1px; 
    *padding-bottom: 1px; 
} 
.btn-group { 
    position: relative; 
    *zoom: 1; 
    *margin-left: .3em; 
} 
.btn-group:before, 
.btn-group:after { 
    display: table; 
    content: ""; 
} 
.btn-group:after { clear: both } 
.btn-group:first-child { *margin-left: 0 } 
.btn-group + .btn-group { margin-left: 5px } 
.dropdown-btn-toolbar { 
    margin-top: 9px; 
    margin-bottom: 9px; 
} 
.dropdown-btn-toolbar .btn-group { 
    display: inline-block; 
    *display: inline; 
    /* IE7 inline-block hack */ 
    *zoom: 1; 
} 
.btn-group > .dropdown-btn { 
    position: relative; 
    float: left; 
    margin-left: -1px; 
    -webkit-border-radius: 0; 
    -moz-border-radius: 0; 
    border-radius: 0; 
} 
.btn-group > .dropdown-btn:first-child { 
    margin-left: 0; 
    -webkit-border-top-left-radius: 4px; 
    -moz-border-radius-topleft: 4px; 
    border-top-left-radius: 4px; 
    -webkit-border-bottom-left-radius: 4px; 
    -moz-border-radius-bottomleft: 4px; 
    border-bottom-left-radius: 4px; 
} 
.btn-group > .dropdown-btn:last-child, 
.btn-group > .dropdown-toggle { 
    -webkit-border-top-right-radius: 4px; 
    -moz-border-radius-topright: 4px; 
    border-top-right-radius: 4px; 
    -webkit-border-bottom-right-radius: 4px; 
    -moz-border-radius-bottomright: 4px; 
    border-bottom-right-radius: 4px; 
} 
.btn-group > .dropdown-btn.large:first-child { 
    margin-left: 0; 
    -webkit-border-top-left-radius: 6px; 
    -moz-border-radius-topleft: 6px; 
    border-top-left-radius: 6px; 
    -webkit-border-bottom-left-radius: 6px; 
    -moz-border-radius-bottomleft: 6px; 
    border-bottom-left-radius: 6px; 
} 
.btn-group > .dropdown-btn.large:last-child, 
.btn-group > .large.dropdown-toggle { 
    -webkit-border-top-right-radius: 6px; 
    -moz-border-radius-topright: 6px; 
    border-top-right-radius: 6px; 
    -webkit-border-bottom-right-radius: 6px; 
    -moz-border-radius-bottomright: 6px; 
    border-bottom-right-radius: 6px; 
} 
.btn-group > .dropdown-btn:hover, 
.btn-group > .dropdown-btn:focus, 
.btn-group > .dropdown-btn:active, 
.btn-group > .dropdown-btn.active { z-index: 2 } 
.btn-group .dropdown-toggle:active, 
.btn-group.open .dropdown-toggle { outline: 0 } 
.btn-group > .dropdown-toggle { 
    padding-left: 8px; 
    padding-right: 8px; 
    -webkit-box-shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05); 
    -moz-box-shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05); 
    box-shadow: inset 1px 0 0 rgba(255,255,255,.125), inset 0 1px 0 rgba(255,255,255,.2), 0 1px 2px rgba(0,0,0,.05); 
    *padding-top: 4px; 
    *padding-bottom: 4px; 
} 
.btn-group > .dropdown-btn-mini.dropdown-toggle { 
    padding-left: 5px; 
    padding-right: 5px; 
} 
.btn-group > .dropdown-btn-small.dropdown-toggle { 
    *padding-top: 4px; 
    *padding-bottom: 4px; 
} 
.btn-group > .dropdown-btn-large.dropdown-toggle { 
    padding-left: 12px; 
    padding-right: 12px; 
} 
.btn-group.open .dropdown-toggle { 
    background-image: none; 
    -webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05); 
    -moz-box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05); 
    box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05); 
} 
.btn-group.open .dropdown-btn.dropdown-toggle { background-color: #e6e6e6 } 
.btn-group.open .dropdown-btn-primary.dropdown-toggle { background-color: #0055cc } 
.btn-group.open .dropdown-btn-warning.dropdown-toggle { background-color: #f89406 } 
.btn-group.open .dropdown-btn-danger.dropdown-toggle { background-color: #bd362f } 
.btn-group.open .dropdown-btn-success.dropdown-toggle { background-color: #51a351 } 
.btn-group.open .dropdown-btn-info.dropdown-toggle { background-color: #2f96b4 } 
.btn-group.open .dropdown-btn-inverse.dropdown-toggle { background-color: #222222 } 
.dropdown-btn .caret { 
    margin-top: 7px; 
    margin-left: 0; 
} 
.dropdown-btn:hover .caret, 
.open.btn-group .caret { 
    opacity: 1; 
    filter: alpha(opacity=100); 
} 
.dropdown-btn-mini .caret { margin-top: 5px } 
.dropdown-btn-small .caret { margin-top: 6px } 
.dropdown-btn-large .caret { 
    margin-top: 6px; 
    border-left-width: 5px; 
    border-right-width: 5px; 
    border-top-width: 5px; 
} 
.dropup .dropdown-btn-large .caret { 
    border-bottom: 5px solid #000000; 
    border-top: 0; 
} 
.dropdown-btn-primary .caret, 
.dropdown-btn-warning .caret, 
.dropdown-btn-danger .caret, 
.dropdown-btn-info .caret, 
.dropdown-btn-success .caret, 
.dropdown-btn-inverse .caret { 
    border-top-color: #ffffff; 
    border-bottom-color: #ffffff; 
    opacity: 0.75; 
    filter: alpha(opacity=75); 
} 

Live demo (jsfiddle)

Live demo (jsfiddle) updated

Live demo(jsfiddle) updated 2

PS: non provare la versione 3 né 4 ...

Answer 2

Oppure si può semplicemente aggiungere una classe CSS per i div BTN-gruppo e fare questo, invece:

http://jsfiddle.net/plankmeister/JsPcg/

HTML:

<div class="navbar navbar-fixed-top"> 
     <div class="navbar-inner"> 
      <div class="container"> 
       <div class="pull-left"> 
        <div class="btn-group btn-group-merge"> 
         <a class="btn" href="#" data-toggle="dropdown"><i class="icon icon-certificate"></i></a> 
         <ul class="dropdown-menu"> 
          <li><a href="#">One</a></li> 
          <li><a href="#">Two</a></li> 
          <li><a href="#">Three</a></li> 
         </ul>        
        </div> 
        <div class="btn-group btn-group-merge"> 
         <a class="btn" href="#" data-toggle="dropdown"><i class="icon icon-comment"></i></a> 
         <ul class="dropdown-menu"> 
          <li><a href="#">A B C</a></li> 
          <li><a href="#">D E F</a></li> 
          <li><a href="#">G H I</a></li> 
         </ul>        
        </div>       
       </div> 
      </div> 
     </div> 
    </div> 

CSS:

.navbar-fixed-top .btn-group-merge { 
     margin-left : -5px; 
    } 
    .navbar-fixed-top .btn-group-merge:first-child { 
     margin-left : 0; 
    } 
    .navbar-fixed-top .btn-group-merge .btn { 
     border-radius: 0 4px 4px 0; 
    } 
    .navbar-fixed-top .btn-group-merge:first-child .btn { 
     border-radius: 4px 0 0 4px; 
    } 

Funzionerà con qualsiasi numero di pulsanti nel gruppo di pulsanti, ma solo il primo e il la st sarà reso correttamente. È possibile utilizzare alcuni CSS-fu per risolverlo, ma non lo renderizza su IE < 10.