section.slider {
    margin: 0 auto;
    width: 100%;
    height: auto;
    padding: 0 !important;
    overflow: hidden;
}

.slider-content {
    width: 400%;
    height: auto;
    display: flex;
}

    .slider-content input, .img-mobile {
        display: none;
    }

.slide-box {
    width: 25%;
    height: auto;
    position: relative;
    text-align: center;
    transition: 0.5s;
}

    .slide-box img {
        width: 100%;
    }

.nav-manual, .nav-auto {
    position: absolute;
    width: 100%;
    margin-top: 35%;
    display: flex;
    justify-content: center;
}

    .nav-manual .manual-btn, .nav-auto div {
        border: 1px solid #27c6f6;
        padding: 10px;
        border-radius: 50%;
        cursor: pointer;
        transition: 0.2s;
    }

        .nav-manual .manual-btn:not(:last-child), .nav-auto div:not(:last-child) {
            margin-right: 10px;
        }

        .nav-manual .manual-btn:hover {
            background-color: aquamarine;
        }

#radio1:checked ~ .nav-auto .auto-btn1,
#radio2:checked ~ .nav-auto .auto-btn2,
#radio3:checked ~ .nav-auto .auto-btn3,
#radio4:checked ~ .nav-auto .auto-btn4 {
    background-color: aqua;
}

#radio1:checked ~ .primeiro {
    margin-left: 0%;
}

#radio2:checked ~ .primeiro {
    margin-left: -25%;
}

#radio3:checked ~ .primeiro {
    margin-left: -50%;
}

#radio4:checked ~ .primeiro {
    margin-left: -75%;
}

@media screen and (max-width:1280px) {
    .img-desktop {
        display: none;
    }

    img-mobile {
        display: block;
    }

    .nav-auto, .nav-manual {
        margin-top: 100%;
    }
}