body, html {
    height: 100%;
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}

@keyframes fadeIn {
    0% {
      opacity: 0;
    }

    50% {
        opacity: 0;
      }
  
    100% {
      opacity: 1;
    }
}

.grid {
    animation-name: fadeIn;
    animation-duration: 1s;
    animation-iteration-count: 1;
}

.grid-item {
    width: 100%;
    height: 100%;
    justify-content: center;
    align-items: center;
    display: flex;
    border: 2px solid #aaa;
    border-radius: 25px;
    font-family: "Arial";
    background: #ddd;
    color: #000;
}
.text {
    font-family: "Arial";
    font-size: 120%;
    justify-content: center;
}

* {
    box-sizing: border-box;
}
      
.bg-image {
    /* The image used */
    background-image: url("../background.jpg");

    /* Full height */
    height: 100%;

    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Position text in the middle of the page/image */
.content-box {
    background-color: rgba(0,0,0, 0.8); /* Black w/opacity/see-through */
    color: white;
    font-weight: bold;
    border: 1px solid #f1f1f1;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    width: 80%;
    padding: 20px;
    text-align: center;
}

.problem-box {
    height: 80%
}