:root {
    --first-color: #243253;
    --light-color: #f1f1f1;
    --dark-color: #3d3d3d;
}

.slider {
    height: 100vh;
    position: relative;
}

.slider .full {
    display: none;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--first-color);
}

.slider .full::before {
    content: "";
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.50);
}

.slider .full.active {
    display: block;
    position: absolute;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
}

/* .slider .full.one {
    background-image: url("../../new_images/1.png");
}

.slider .full.two {
    background-image: url("../../new_images/slide-2-alt.jpeg");
}

.slider .full.three {
    background-image: url("../../new_images/slide-3-alt.jpg");
}

.slider .full.four {
    background-image: url("../../new_images/slide-4-alt.jpeg");
}

@media (min-width:480px) {
    .slider .full.one {
        background-image: url("../../new_images/1.png");
    }

    .slider .full.two {
        background-image: url("../../new_images/2.png");
    }

    .slider .full.three {
        background-image: url("../../new_images/3.png");
    }

    .slider .full.four {
        background-image: url("../../new_images/4.png");
    }
} */

.slider .change {
    color: var(--light-color);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 32px;
    padding: 10px;
    cursor: pointer;
    background: var(--first-color);
}

.slider .change:hover {
    opacity: 0.8;
    transition: 250ms all;
}

.slider .left {
    padding: 15px 15px 15px 30px;
    border-radius: 0 5px 5px 0;
    left: 0px;
}

.slider .right {
    padding: 15px 30px 15px 15px;
    border-radius: 5px 0 0 5px;
    right: 0px;
}

.slider ul {
    display: flex;
    position: absolute;
    bottom: 2.5%;
    left: 50%;
    transform: translateX(-50%);
}

.slider ul li {
    padding: 5px;
    background-color: var(--light-color);
    margin: 10px;
    cursor: pointer;

}

.slider ul li.active,
.slider ul li:hover {
    background-color: var(--first-color);
    transition: 250ms all;
}

@media (max-width:767px) {
    .slider .change {
        display: none;
    }
    .slider .full{
        background-size: contain;
    }
    .slider {
        height: 60vh;
    }
}