style.css

body, p {
    margin: 0;
    padding: 0;
}

nav {
    display: flex;
    justify-content: space-around;
    width: 20%;
    margin-left: auto;
    padding: 2em;
}
a {
    color: black;
    text-decoration: none;
}

a:hover {
    text-decoration: underline!important;
}

nav img{
    height: 20px;
}

main {
    width: 50%;
    margin: 6.9em auto;
    text-align: center;
}

input {
    width: 80%;
    padding: 1em;
    text-align: center;
    border-radius: 30px;
    border: 1.5px solid gray;
}

.btn{
    margin-top: 1em;
}

.btn button{
    padding: 0.5em;
    border: none;
    border-radius: 4px;
}

button:hover{
    border: 1px solid darkgray;
}

.lang {
    margin-top: 2em;
    text-align: center;
}
.lang p {
    justify-content: space-evenly;
}

.lang a {
    color: blue;
    text-decoration: none;
}

.lang a:hover{
    text-decoration: underline;
}

footer{
    background-color: rgb(240, 236, 236);
}

.footer_top {
    padding: 1em;
}

.footer_bottom {
    padding: 1em;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid gray;
}

.left a {
    margin-right: 1em;
    color: black;
    text-decoration: none;
}

.right a {
    margin-right: 1em;
    color: black;
    text-decoration: none;
}