style.css

* {
    box-sizing: border-box
}

body,
html {
    height: 100%;
}

.bg {
    /* The image used */
    background-image: linear-gradient(120deg, #fbc2eb 0%, #a6c1ee 100%);
    /* Full height */
    height: 100%;
    width: 100%;
    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: 'Dosis', sans-serif;
    line-height: 1.6;
    background-image: linear-gradient(120deg, #fbc2eb 0%, #a6c1ee 100%);
}

#root {
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    font-family: 'Staatliches';
    text-align: center;
    margin: 0 0 0 0;
    font-size: 1.5rem;
    color: white;
}

p {
    font-size: 1.4rem;
    padding: 2rem 2rem 2rem 2rem;
    margin: 0;
    font-weight: bold;
    color: purple;
}

.container {
    display: flex;
    flex-wrap: wrap;
}

.card {
    width: 100%;
    height: 200%;
    margin: 0.5rem;
    background: white;
    box-shadow: 2px 4px 25px rgba(0, 0, 0, .1);
    border-radius: 12px;
    overflow: hidden;
    transition: all .2s linear;
}

.card:hover {
    box-shadow: 2px 8px 45px rgba(0, 0, 0, .15);
    transform: translate3D(0, -2px, 0);
}

@media screen and (min-width: 600px) {
    .card {
        flex: 1 1 calc(50% - 2rem);
    }
}

@media screen and (min-width: 900px) {
    .card {
        flex: 1 1 calc(33% - 2rem);
    }
}

.btn-hover {
    width: 50%;
    font-size: 100%;
    color: #fff;
    cursor: pointer;
    height: 70px;
    text-align: center;
    border: none;
    background-size: 300% 100%;
    border-radius: 50px;
    transition: all .4s ease-in-out;
}

.btn-hover:hover {
    background-position: 100% 0;
    transition: all .4s ease-in-out;
}

.btn-hover:active {
    width: 50%;
    font-size: 100%;
    color: #fff;
    cursor: pointer;
    height: 70px;
    text-align: center;
    border: none;
    background-size: 300% 100%;
    background-position: 100% 0;
    transition: all .4s ease-in-out;
}

.btn-hover:focus {
    outline: none;
}

.btn-hover.color-9 {
    background-image: linear-gradient(to right, #25aae1, #4481eb, #04befe, #3f86ed);
    box-shadow: 0 4px 15px 0 rgba(65, 132, 234, 0.75);
}

.btn-hover.color-9:active {
    background-image: linear-gradient(to right, #25aae1, #4481eb, #04befe, #3f86ed);
    box-shadow: 0 4px 15px 0 rgba(65, 132, 234, 0.75);
}

@keyframes pulse_animation {
    0% {
        transform: scale(1);
    }
    30% {
        transform: scale(1);
    }
    40% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
    60% {
        transform: scale(1);
    }
    70% {
        transform: scale(1);
    }
    80% {
        transform: scale(1);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation-name: pulse_animation;
    animation-duration: 3s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}