html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

.border-danger-hover:hover {
    border-color: #dc3545 !important;
    -webkit-box-shadow: 0 0 5px 2px #dc3545;
    -moz-box-shadow: 0 0 5px 2px #dc3545;
    box-shadow: 0 0 5px 2px #dc3545;
}

.square-150 {
    width: 150px !important;
    height: 150px !important;
}