html, body{
    height: 100%;
}
body{
    font-family: Arial, sans-serif;
    margin: 0px;
    padding: 0px;
    background-color: #f0f0f0;
    display: flex;
    flex-direction: column;
}
main{
    flex: 1;
}
header{
    background-color: black;
    color: white;
    padding: 20px;
    text-align: left;
    margin: 0px;
}
header h3{
    font-size: 2.5rem;
    margin: 5px;
}
nav{
    margin-top: 10px;
    margin-right: 37rem;
}
nav,a{
    background-color: white;
    color: black;
    padding: 10px;
    text-decoration: none;
    border-radius: 10px;
    
}
nav a:hover{
    background-color: lightgray;
    color: black;
}
h1{
    text-align: center;
    
    font-size: 4rem;
}
button{
    width: 250px;
    height: 75px;
    background-color: rgb(238, 64, 64);
    color: white;
    padding: 10px;
    text-decoration: none;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    margin: 20px 575px;
    font-size: large;
    
}
button:hover{
    background-color: rgb(189, 49, 49);
    color: white;
}
form, #thanks{
    background-color: gray;
    margin: 10px 250px 35px 250px;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 5px 10px 10px black;
    color: white;
    text-align: center;
}
input{
    margin-bottom: 20px;
    margin-top: 5px;
   
}
#feedback input{
    border-radius: 5px;
    width: 10rem;
    height: 2rem;
    text-align: center;
    
}
textarea{
    border-radius: 5px;
    width: 20rem;
    height: 5rem;
    margin-top: 10px;
    text-align: center;
}
#contact input{
    width: 1.5rem;
    height: 1.5rem;
}
legend{
    text-align: center;
    width: 100%;
    margin-bottom: 5px;
}
input[type="submit"]{
    background-color: rgb(238, 64, 64);
    color: white;
    padding: 10px;
    text-decoration: none;
    border-radius: 10px;
    border: none;
    cursor: pointer;
}
input[type="submit"]:hover{
    background-color: rgb(189, 49, 49);
    color: white;
}

footer{
    background-color: black;
    color: white;
    padding: 20px;
    text-align: center;
    margin-top: 20px;
    
}