@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,700;0,800;0,900;1,800;1,900&family=Roboto+Slab:wght@100;200;300;400;500;600;700;800;900&display=swap');

main {
    display: flex;
    justify-content: center;
    font-family: 'Montserrat', sans-serif;
}

.app-wrapper {
    width: 50vw;
    height: 80vh;
    border-radius: 20px;
    border: 1px solid gold;
    box-shadow: 0px 5px 10px 0px rgba(0, 0, 0, 0.5);
    padding: 40px;
}

img {
    width: 2vw;
    vertical-align: middle;
}

button {
    margin: 0;
    padding: 0;
    width: 8vw;
    border: none;
    background-color: inherit;
    cursor: pointer;
}
.exchange {
    width: 4vw;
    
}
.exchange:hover {
    animation-name: rotation-btn;
    animation-duration: 3s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    
}
h1 {
    text-align: center;
}
form {
    text-align: center;
}
input {
    width: 8vw;
    height: 8vh;
    border-radius: 20px;
    border-color: gold;
    box-shadow: 0px 5px 10px 0px rgba(0, 0, 0, 0.5);
}
select {
    width: 5vw;
    height: 6vh;
    border: none;
    box-shadow: 0px 5px 10px 0px rgba(0, 0, 0, 0.5);
}

@keyframes rotation-btn {
    0% {
        transform: rotate(0deg) scale(1);
        
    } 
    100% {
        transform: rotate(360deg) scale(1.5);

    }
}