/* Structure */
body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: white;
}

#main-header, #main-footer {
    background-color:blanchedalmond;
    text-align: center;
}

#main-header {
    padding: auto;
}
#main-footer {
    padding:5px;
}

#main-main {
    background-color: rgb(74, 129, 248);
    padding: 5px;
}

button {
    padding: 5px;
}

#column1,
#column2,
#column3 {
    background-color:rgb(243, 255, 255);
    padding: 5px;
    margin: 5px;
    border-radius: 5px;
}

.flex-container h2 {
    text-align: center;
}

.hide {
    display: none;
}

img {
    padding: 5px;
    display: block;
    margin:relative;
}

/* Animation */
#circle {
    margin-left: 0px;
    margin-top: 20px;
    padding:5px;
    background-color: rgb(0, 22, 63);
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.move-circle {
    position: relative;
    animation-name: anim-circle;
    animation-duration: 1s;
    animation-iteration-count: infinite;
}

@keyframes anim-circle {
    0% {
        background-color: brown;
        opacity: 1;
        left:0;
    }
    25% {
        background-color: cadetblue;
        opacity: 1;
        left: 100px;
    }
    50% {
        background-color: rgb(139, 46, 119);
        opacity: 1;
        left: 200px;
    }
    75% {
        background-color: seagreen;
        opacity: 1;
        left: 100px;
    }
    100% {
        background-color: white;
        opacity: 1;
        left:0;
    }
}

/* Typography */
input[type=text], textarea {
    width: 100%;
    padding: 12px;
    box-sizing: border-box;
    margin-top: 6px;
    margin-bottom: 16px;
    resize: vertical;
  }
  
  .container {
    border-radius: 5px;
    padding: 20px;
  }

/* Media Query */
@media (min-width: 768px) {
    .flex-container {
        display: flex;
    }

    #column1,
    #column2,
    #column3 {
        flex: 1;
        flex-wrap: wrap;
    }
}