style.css

* {
    box-sizing: border-box;
}

body {
    color: #fff;
    font-family: 'Khula', sans-serif;
    height: 100vh;
    overflow: hidden;
    margin: 0;
    text-align: center;
}
  

.bull {
    width: 24px;
    height: 24px;
    background-image: url('images/bulls.png');
    background-repeat: no-repeat;
    display: inline-block;
}
.cow {
    width: 24px;
    height: 24px;
    background-image: url('images/cow.png');
    background-repeat: no-repeat;
    display: inline-block;
}
.space {
    width: 24px;
    height: 24px;
}


.screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
    transition: margin 0.5s ease-out;
    background: linear-gradient(90deg, #486d97 0%, #3b6897 100%);
}

.screen.up {
margin-top: -100vh;
}


h1 {
    color: white;
}

.description {
    text-align: left;
}
.hidden {
    display: none;
}
.hist {
    margin: 0 5px;
    font-weight: 700;
    font-size: 30px;
}

#history {
    height: 40vh;
    overflow: auto;
}