@import url('https://fonts.googleapis.com/css?family=Open+Sans:400,700&display=swap');
:root {
    --primary-color: rgb(16, 97, 116);
    --primary-color-darker: rgb(9, 48, 56);
}

*{
    box-sizing: border-box ;
    outline: 0;
    
}

body{
    margin: 0;
    padding: 0;
    background-color: var(--primary-color);
    font-family: 'Open sans', sans-serif;
    font-size: 1.3em;
    line-height: 1.5em;
}

.container{
    max-width: 500px;
    margin: 50px auto;
    background-color: #fff;
    padding: 50px;
    border-radius: 10px;
    
}

form input, form label, form button {
    display: block;
    width: 100%;
    margin-bottom: 10px;
}

form input {
    font-size: 24px;
    height: 50px;
    padding: 0 20px;
}

form input:focus{
    outline: 1px solid var(--primary-color);
}

form button{
    border: none;
    background-color: var(--primary-color);
    color: white;
    font-size: 18px;
    font-weight: 700;
    height: 50px;
    cursor: pointer;
    margin-top: 30px;
}

form button:hover{
    background-color: var(--primary-color-darker);
}

.calculadora{
    width: 400px;
}

.display{
    font-size: 2em;
    width: 100%;
    text-align: right;
}

.btn{
    width: 100%;
    height: 50px;
    font-size: 1em;
    border: none;
    background-color: #dfdfdf;
    cursor: pointer;
    border-radius: 2px;

}

.btn:hover{
    background-color: #b1b1b1;
}

.btn-eq{
    background-color: rgb(255, 176, 31);
}

.btn-eq:hover{
    background-color: #ff9100;
}