span.twitter-typeahead .tt-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    float: left;
    min-width: 100%;
    padding: 5px 0;
    margin: 2px 0 0;
    list-style: none;
    font-size: 14px;
    text-align: left;
    background-color: #ffffff;
    border: 1px solid #cccccc;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
    background-clip: padding-box;
}
span.twitter-typeahead .tt-suggestion {
    display: block;
    padding: 3px 20px;
    clear: both;
    font-weight: normal;
    line-height: 1.42857143;
    color: #333333;
    white-space: nowrap;
}
span.twitter-typeahead .tt-suggestion:nth-child(even) {
    background-color: #F8F8F8;
}
span.twitter-typeahead .tt-suggestion:hover,
span.twitter-typeahead .tt-suggestion:focus {
    color: #ffffff;
    text-decoration: none;
    outline: 0;
    background-color: #428bca;
    cursor: pointer;
}
span.twitter-typeahead .tt-suggestion.tt-cursor {
    color: #ffffff;
    background-color: #428bca;
}
span.twitter-typeahead {
    width: 100%;
}
span.twitter-typeahead .tt-empty{
    padding: 10px;margin:0;
}
.input-group span.twitter-typeahead {
    display: block !important;
}
.input-group span.twitter-typeahead .tt-menu {
    top: 32px !important;
}
.input-group.input-group-lg span.twitter-typeahead .tt-menu {
    top: 44px !important;
}
.input-group.input-group-sm span.twitter-typeahead .tt-menu {
    top: 28px !important;
}