[data-toggle="collapse"]:after {
    display: inline-block;
    font: normal normal normal 14px/1 FontAwesome;
    font-size: inherit;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /*content: "...";*/
    transform: rotate(90deg) ;
    transition: all linear 0.25s;
    float: left;
}   
[data-toggle="collapse"].collapsed:after {
    transform: rotate(0deg) ;
}
.card {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0,0,0,.125);
    border-radius: .25rem;
}

.card-header:first-child {
    border-radius: calc(.25rem - 1px) calc(.25rem - 1px) 0 0;
}
.card-header {
    padding: .75rem 1.25rem;
    margin-bottom: 0;
    background-color: rgba(0,0,0,.03);
    border-bottom: 1px solid rgba(0,0,0,.125);
}
.card-body {
    -webkit-box-flex: 1;
    -ms-flex: 1 1 auto;
    flex: 1 1 auto;
    padding: 1.25rem;
}