.container-btn {
    display: block;
    position: relative;
    padding-left: 35px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 22px;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.container-btn input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 22px;
    background-color: #eee;
}

.help-block {
    color: #c93433;
}

.container-btn:hover input ~ .checkmark {
    background-color: #ccc;
}

.container-btn input:checked ~ .checkmark {
    background-color: #2d2149;
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.container-btn input:checked ~ .checkmark:after {
    display: block;
}

.container-btn .checkmark:after {
    left: 8px;
    top: 4px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}

.spin-icon {
    margin-right: 8px;
}