body {

    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    animation: slideimage 25s infinite alternate;

}

.rounded-20 {
    border-radius: 20px;
}

.containercheck {

    width: 100%;
    margin: 0;
    position: relative;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

}

.containercheck input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {

    color: #c0c0c0;
    display: block;
    padding: 10px;

}

.containercheck input:checked ~ .checkmark {
    background-color: #ffffff;
    color: #0c3a9d;
    font-weight: bold;
    border-radius: 20px;
}

@keyframes slideimage {
    
    0% { background-image: url('../img/sl1.png'); }
    12% { background-image: url('../img/sl1.png'); }

    17% { background-image: url('../img/sl2.png'); }
    29% { background-image: url('../img/sl2.png'); }

    34% { background-image: url('../img/sl3.png'); }
    46% { background-image: url('../img/sl3.png'); }

    51% { background-image: url('../img/sl4.png'); }
    63% { background-image: url('../img/sl4.png'); }

    68% { background-image: url('../img/sl5.png'); }
    80% { background-image: url('../img/sl5.png'); }

    85% { background-image: url('../img/sl6.png'); }
    100% { background-image: url('../img/sl6.png'); }

}