*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.centered-heading{
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 10%;
    color: #9eff20;
    font-family: "Archivo Black", sans-serif;
    font-weight: 1000;
    font-size: 5rem;
}
body {
    height: 100%;
    margin: 0;
    background-color: #0c023a; 
}
.container{
    margin-top: 100px;
    margin-left: 10%;
    margin-right: 60%;
}
.container h1{
    color: #ffffff;
    font-family: "Archivo Black", sans-serif;
    font-weight: 1000;
    font-size: 3rem;
}

span.change{
    color: #9eff20;
    font-family: "Archivo Black", sans-serif;
    font-weight: 1000;
    font-size: 3rem;
}
.box{
    width:100%;
    background-color: #ffffff;
    margin-top: 50px;
    margin-bottom: 25px;
    margin-right: 50%;
    border-radius: 5px;
    padding: 25px 25px;
    position: relative;
}
.box.length-box{
   max-width: 100%;
    background-color: #ffffff;
    margin-top: 50px;
    margin-bottom: 25px;
    margin-right: 50%;
    border-radius: 5px;
    padding: 25px 25px;
    position: relative;
    overflow: visible;
}

.box img{
    position: absolute;
    right:0;
    height: 25px;
    cursor: pointer;
}
.box input{
    border:0;
    outline:0;
    font-size: 25px;
}
.btn button{
    border:0;
    outline:0;
    font-size: 30px;
    font-weight: 700;
    font-family: "Archivo Black", sans-serif;;
    width:100%;
    padding: 15px 25px;
    text-align: center;
    background-color: #9eff20;
    color: #ffffff;
    border-radius: 5px;
}
@media screen and (max-width: 767px) {
    .centered-heading {
        font-size: 2.7rem;
    } 
    
    .container h1 {
        font-size: 2rem;
    }
    
    span.change {
        font-size: 2rem;
    }
    
    .container {
        display: grid; 
    }
}


@media screen and (min-width: 768px) and (max-width: 1150px) {
    .centered-heading {
        font-size: 2.9rem;
    } 
    
    .container h1 {
        font-size: 2.2rem;
    }
    
    span.change {
        font-size: 2.2rem;
    }
    
    .container {
        display: grid; 
    }
}