@import url('https://fonts.googleapis.com/css2?family=Koulen&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Koulen', cursive;
}

body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #0e0e0e;
}

.container {
    width: 90vw;
    display: inline-flex;
    align-items: flex-start;
    justify-content: flex-start;
}

.panel {
    opacity: .2;
    flex: 0.5px;
    height: 45vw;
    margin: 10px;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    letter-spacing: 1px;
    border-radius: .6rem;
    background-size: cover;
    background-repeat: no-repeat;
    transition: flex 0.7s ease-in;
    background-position: 25% 100%;
    -webkit-transition: all 700ms ease-in;
}

    .panel h3 {
        opacity: 0;
        left: -100%;
        bottom: 1rem;
        font-size: 30px;
        padding: 0 2rem;
        color: #080808;
        position: absolute;
        background-color: #79cf24;
    }

.panel.active {
    flex: 5;
    opacity: 1;
    background-position: left;
    background-size: 100% cover;
    background-repeat: no-repeat;
}

    .panel.active h3 {
        left: 0;
        opacity: 1;
        transition: all 0.4s ease-in 0.4s;
    }

@media (max-width: 480px) {
    .container {
        width: 100vw;
    }

    .panel h3 {
        left: 2rem;
        bottom: 1rem;
        font-size: 14px;
        padding: 0 1rem;
    }

    .panel:nth-of-type(4),
    .panel:nth-of-type(5) {
        display: none;
    }
}