styles.css

body {
    margin: 0 auto;
    color: #444645;
    font-weight: bold;
    font-family: 'Lato', sans-serif;
    height: 100vh;
    width: 100vw;
    background-color: #f1f0f0;
    text-align: center;
}

.flex {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center; 
    padding: 1rem;
    box-sizing: border-box;
}
h1{
    font-size: 3rem;
    text-align: center;
    font-weight: 400;
}

p {
    font-size: 2rem; 
    margin: 0.5rem;
}

a { 
    text-decoration: none;
    color: #4caf50; 
}
a:hover {
    color: #388e3c;
}
.mood-balls {
    margin-bottom: 4rem;
}

.title {
    text-transform: uppercase;
    margin-bottom: 4rem;
}

.message {
    font-size: 2rem; 
}

.mood-ball {
    height: 25vw;
    width: 25vw;
    text-align: center;
    padding: 1rem;
    background: white;
    border-radius: 50%;
    display: inline-block;
    vertical-align: middle;
    border: 0;
    color: white;
    font-weight: 900;
    font-size: 3rem;
    margin: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    transition: all .2s linear;
}

.mood-ball:hover {
    box-shadow: 0 7px 14px rgba(0,0,0,0.25), 0 4px 4px rgba(0,0,0,0.1);
}

.num {
    color: #4caf50;
}

#bady-moody {
    background-color: #e53935; 
}

#okey-moody {
    background-color: #ffa726; 
}

#goody-moody {
    background-color: #4caf50; 
}

@media only screen and (min-width:640px) {
    .break {
        display: none;
    }
}

@media only screen and (max-width:640px) {
    html {
        font-size: 10px
    }
}