style.css

*{
    box-sizing: border-box;
}

body{
    display: flex;
    flex-direction: column;

    height: 100vh;
    justify-content: center;

    width: 100vw;
    align-items: center;

    background-color: burlywood;
    overflow: hidden;
}

nav{
    background-color: cadetblue;
    position: relative;
    width: 80vw;

    height: 50px;

}

.car1{
    background-color: black;
    color: white;
    text-align: center;
    padding: 10px 10px;
    position: absolute;
    right: 0px;
    border: rgb(255, 0, 170) 1px solid;

    width: 50px;
    height: 50px;

    transition-duration: 10000ms linear;
}

.car2{

    background-color: yellow;
    padding: 10px 10px;
    position: absolute;
    left: 0px ;
    border: chartreuse 1px solid;

    width: 50px; 
    height: 50px;

    
    transition-duration: 10000ms linear;
}

.road.active .car1{
    transform: translateX(-1044px);
}

.road.active .car2{
    transform: translateX(1044px); /* 1044px */
}

button{
    margin-top: 10px;
}

.label1,.label2{
    font-size: 1em;
    font-family: "Verdana";
    font-weight: bold;
    color: rgb(53, 73, 31);
}

input:focus{
    background-color: lightblue;
}


.aftercrash{
    font-size: 32px;
    
    color: white;
}

@media( max-width:600px){
    .h1{
        font-size: 1em;
        text-align: center;
    }

    .label1,.label2{
        font-size: 12px;
    }

}