:root {
    background-color: #ecf5ff;
    font-size: 62.5%;
}

* {
 box-sizing: border-box;
 font-family: Arial, Helvetica, sans-serif;
 margin: 0;
 padding: 0;
 color: #333;
}
h1,h2,h3,h4{
    margin-bottom: 1rem;
}
h1{
    font-size: 5.4rem;
    color:#56a5eb;
    margin-bottom: 5rem;
}
h1 > span {
    font-size: 2.4rem;
    font-weight: 500;
}
h2 {
    font-size: 4.2rem;
    margin-bottom: 4rem;
    font-weight: 700; 
}
h3 {
    font-size: 2.8rem;
    font-weight: 500;
}

/*** utilities ***/

.container{
    width: 100vw;
    height:100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 80rem;
    margin: 0 auto;
    padding: 2rem;
}
.container > * {
    width:100%;
}
.flex-column{
    display:flex;
    flex-direction: column;

}
.flex-center{
justify-content: center;
align-items: center;
}
.justify-center{
    justify-content: center;
}
.text-center{
    text-align: center;
}
.hidden{
    display: none;
}


/**** Buttons *****/

.btn{
    font-size:1.8rem ;
    padding:1rem 0 ;
    width:20rem;
    text-align:center ;
    border:0.1rem solid #5615eb;
    margin-bottom: 1rem;
    text-decoration: none;
    color: #56a5eb;
    background-color: white;
}
.btn:hover{
    cursor: pointer;
    box-shadow: 0 0.4rem 1.4rem 0 rgba(86,185,235,0.5);
    transform: translateY(-0.1rem);
    transition: transform 150ms;
}
.btn[disabled]:hover{
cursor: not-allowed;
box-shadow: none;
transition: none;
}

/******  Forms - endHtml ********/
form{
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

input {
    margin-bottom: 1rem;
    width: 20rem;
    padding: 1.5rem;
    font-size: 1.8rem;
    border: none;
    box-shadow: 0 0.1rem 1.4rem 0 rgba(86,185,235,0.5);
}

input ::placeholder{
    color: #aaa;
}