style.css

*{
box-sizing: border-box;
padding: 0;
margin: 0
}

body{
    font-family: sans-serif;
}

.items{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 2rem;
    font-size: 1.1rem;

    padding: 1rem;
}

input{
    padding: 1rem;
    margin: .8rem;
    width: 25rem;
    height: 3rem;
    font-size: 1.1rem;
    border: 3px solid rgb(31, 121, 255);
    outline: none;
}

textarea{
    width: 25rem;
    height: 10rem;
    padding: 1rem;
    display: flex;
    justify-content: center;
     outline: none;
 border: 3px solid rgb(31, 121, 255);
    font-size: 1.1rem;
}

.area{
    display: flex;
}

.area-label{
    margin-left:-2rem;
}

.txt{
    margin-left:.6rem;
}

button{
padding: 1rem;
width: 10rem;
margin-top: 2rem;
text-align: center;
background-color: rgb(75, 224, 75);
font-size: 1.3rem;
color: rgb(2, 2, 15);
box-shadow: 0 .2rem .2rem black;
}

.success{
   background-color: rgb(75, 214, 224);
   font-size: 1.2rem;
   text-transform: capitalize;
    text-align: center;
    margin-top: 10rem;
    padding: 2rem;
    box-shadow: 0 .2rem .2rem rgb(0, 0, 0);
   display: none;
}

.error{
    display: none;
    animation: move .2s ease-in ;
}
@keyframes move{

    0%{
        opacity: 0;
        transform: translateY(-80%);
    }
    50%{
        opacity: .6;
        transform: translate(-20%);
    }

    70%{
        opacity: .7;
        transform: translate(20%);
    }

    100%{
        opacity: 1;
        transform: translate(0);
    }

}