.input-group {
    position: relative;
    display: table;
    border-collapse: separate;
}

.input-group-addon {
    padding: 8px 12px;
    font-weight: 400;
    text-align: center;
    /*background-color: #f0f0f0;*/
    /*border: 1px solid #ccc;*/
    width: 1%;
    vertical-align: top;
    display: table-cell;
}

.prefix input {
    /*border-radius: 0px 4px 4px 0px;*/
}

.prefix .input-group-addon {
    border-right: 0;
    /*border-radius: 4px 0px 0px 4px;*/
}

.presuffix div {
    /*background-color: #f0f0f0;*/
}
.input-group-addon.prefix {
    border-right: 0;
}