.btn-collapse {
    display: block;
    position: absolute;
    color: #FFFFFF;
    background: #f80000;
    text-align: center;
    text-decoration: none;
    font-size: 10px;
    font-weight: 700;
    cursor: pointer;
}

a:focus, a:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

.btn-collapse.collapse-left:after, .sidebar .btn-collapse:after {
    left: 0;
    top: 100%;
    border-top: 20px solid #f80000;
    border-right: 20px solid transparent;
}

.btn-collapse.collapse-left:before, .sidebar .btn-collapse:before {
    left: 0;
    bottom: 100%;
    border-bottom: 20px solid #f80000;
    border-right: 20px solid transparent;
}

#widgets .btn-collapse:after, .btn-collapse.collapse-top:after {
    top: 0;
    left: 100%;
    border-bottom: 20px solid #f80000;
    border-right: 20px solid transparent;
}

#widgets .btn-collapse:before, .btn-collapse.collapse-top:before {
    top: 0;
    right: 100%;
    border-bottom: 20px solid #f80000;
    border-left: 20px solid transparent;
}