* {
    box-sizing: border-box;
}

html,
body {
margin: 0;
font-family: Arial, Helvetica, sans-serif;
color: #fff;
background:#333;
overflow: hidden;
}

.landing {
position: relative;
background-image: url('ebusiness.jpg');
background-size: cover;
background-position: center;
height: 100vh;
}

.landing-inner {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.7);
text-align: center;
padding-top: 10px;
}

.landing h1 {
    font-size: 60px;
}

.landing p {
   font-size: 20px; 
}

.countdown {
    font-size: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.countdown div {
padding: 20px;
border: 1px solid #fff;
border-radius: 10px;
margin: 5px;
opacity: 0.7px;
background: #000;
}

.countdown div:first-child {
    background: #17a2b8;
}

.countdown span {
display: block;
font-size: 25px;
}

@media(max-width: 650px) {
  .landing img {
    width: 70%;
  }

  .landing h1 {
     font-size: 30px; 
  }

  .countdown {
      font-size: 30px;
      flex-direction: column;
  }

  .countdown div {
      display: none;
  }

  .countdown div:first-child {
    display: block;
    width: 80%;
    padding: 10px;
  }
}

@media (max-height: 1200px) {
  img {
      width: 20%;
  }

  p {
      display: block;
  }
}

@media (max-height: 400px) {
    img{
        padding-bottom: 30px;
    }

  h1 {
      display: none;
  }
}