fewieden/MMM-Modal

.MMM-Modal {
    margin: 0;
}

.MMM-Modal .modal {
    position: fixed;
    z-index: 20;
    text-align: left;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

.MMM-Modal ul.help {
    margin: 0;
}

.MMM-Modal .modal > header,
.MMM-Modal .modal > footer {
    display: flex;
    justify-content: space-between;
}

.MMM-Modal .btn-close,
.MMM-Modal .btn-cancel,
.MMM-Modal .btn-confirm {
    outline: none;
}

.MMM-Modal .btn-close {
    border: none;
    background: transparent;
    color: #aaa;
}

.MMM-Modal .btn-cancel {
    border: 2px solid #aaa;
    background: transparent;
    color: #aaa;
    padding: 10px 20px;
}

.MMM-Modal .btn-confirm {
    border: 2px solid #aaa;
    background: #aaa;
    color: black;
    padding: 10px 20px;
}

.MMM-Modal-blur {
    -webkit-filter: blur(2px) brightness(50%);
    -moz-filter: blur(2px) brightness(50%);
    -o-filter: blur(2px) brightness(50%);
    filter: blur(2px) brightness(50%);
}