style.css

* {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
}

body {
    height: 100%;
    background: linear-gradient(180deg, rgba(198,148,49,1) 0%, rgba(16,71,44,1) 25%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.gifs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 80px;
    margin: 20px auto;
}

.logo {
    width: 100px;
    
    display: block;
}

main {
    width: 375px;
    border-radius: 20px;
    background-color: #f4f4f4;
    padding: 44px 24px 23px;
    margin: 0 auto 40px;
    border: 2px solid #0a063b;
}

label {
    color: #777777;
    font-weight: 400;
    font-size: 14px;
}

select, input {
    background: #ffffff;
    border: 1px solid #10472c;
    border-radius: 4px;
    height: 48px;
    width: 100%;
    margin-bottom: 24px;
    padding-left: 18px;
    font-weight: 700;
    font-size: 16px;
    color: #555555;
    cursor: pointer;
}

button {
    width: 100%;
    background: #347e59;
    border-radius: 30px;
    border: none;
    height: 48px;
    color: #ffffff;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 6px 6px 10px #347e59;
    text-transform: uppercase;
}

button:hover {
    opacity: .8;
    font-size: 20px;
}

button:active {
    opacity: .5;
    font-size: 18px;
}

section {
    border: 1px solid #10472c;
    border-radius: 20px;
    margin-top: 36px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.arrow-img {
    margin: 15px 0;
}

.currency-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.currency {
    color: #777777;
    font-size: 14px;
}

.currency-value, .currency-value-to-convert {
    color: #555555;
    font-weight: 700;
    font-size: 20px;
}