*{
    box-sizing: border-box;
}
h1{
    font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    text-shadow: 2px 1px lightcoral; 
}

body{
    background-color: bisque;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    flex-direction: column ;
    overflow-x: hidden;
    

}

.box{
    background-color: cornflowerblue;
    height: 200px;
    width:400px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin:20px;
    border-radius: 40px;
    font-family:Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    font-size: xx-large;
    box-shadow: 10px 10px 10px lightcoral;
    transform: translateX(400%);
    transition: transform 0.4s ease;

}

.box:nth-of-type(even){
    transform: translateX(-400%);
    
}

.box.show{
    transform: translateX(0);
}