body{
  background-image: url("bg.jpg");
  background-size: cover;
}

.container {
    position: relative;
    width: 100%;
    max-width: 700px;
    left:28%;
}

.container img {
    width: 100%;
    height: auto;
}

.container .chk {
    position: absolute;
    left: 7%;
    transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    padding: 12px 24px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    text-align: center;
}

table {
    font-family: arial, sans-serif;
    border-collapse: collapse;
    width: 40%;
    background-color: white;
}

th {
    border: 1px solid #dddddd;
    text-align: left;
    padding: 8px;
}