style.css

@import url('https://fonts.googleapis.com/css2?family=Rubik+Marker+Hatch&display=swap');
html {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Rubik Marker Hatch, sans-serif;
    background: #2980B9;
    /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #FFFFFF, #6DD5FA, #2980B9);
    /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #FFFFFF, #6DD5FA, #2980B9);
    /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

h1 {
    text-align: center;
    margin-top: 25px;
    margin-bottom: 15px;
    font-size: 40px;
    letter-spacing: 5px;
}

/* Loader */

.loader {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8)
}

.loader img {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Image Container */
.image-container {
    margin: 10px 30%;
}

.image-container img {
    width: 100%;
    margin-top: 10px;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
    cursor: pointer;
    border-radius: 5px;
}

img:hover {
    transform: translateY(-5px);
    box-shadow: 10px 5px 5px black;
}
/* Media Query: Smartphone */
@media screen and (max-width: 600px) {
    h1 {
        font-size: 20px;
        letter-spacing: 4px;
    }
    .image-container {
        margin: 10px;
    }
}

@media screen and (max-width: 400px) {
    h1 {
        font-size: 20px;
        letter-spacing: normal;
    }

    .image-container {
        margin: 10px;
    }
}