style.css

html,
body,
.wrapper {
  height: 100%;
}

html,
body {
  padding: 0;
  margin: 0;
}

body {
  font: 1rem/1.516 "Montserrat", Arial, sans-serif;
}

.wrapper {
  position: relative;
  background: url('./assets/images/background2.jpg') no-repeat center center/cover;
}
.wrapper:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(33, 33, 33, 0.25);
}

header,
.content,
footer {
  position: absolute;
}

header,
footer {
  width: 100%;
}

header {
  top: 0;
  text-align: center;
}

.header__logo {
  max-width: 65px;
  fill: #fff;
}

.content {
  top: 50%;
  left: 50%;
  text-align: center;
  color: #fff;
  transform: translate(-50%, -50%);
}
.content h1 {
  margin-top: 0;
}
.content form {
  margin: auto;
  display: table;
}
.content input {
  float: left;
  font-size: 16px;
  border: 1px solid #fff;
}
.content input[type=email] {
  padding: 12px;
  background: #fff;
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
}
.content input[type=submit] {
  padding: 12px 24px;
  color: #fff;
  background: transparent;
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
  cursor: pointer;
  transition: all 0.235s ease-in-out;
}
.content input[type=submit]:hover {
  color: #212121;
  background: #fff;
}

.countdown {
  margin: auto;
  display: table;
  font-size: 28px;
  font-weight: 500;
}
.countdown > div {
  float: left;
  min-width: 75px;
}
.countdown span {
  position: relative;
  display: block;
  font-size: 16px;
  text-align: center;
}
.countdown span:before {
  content: "";
  position: absolute;
  top: -2px;
  right: 0;
  left: 0;
  margin-right: auto;
  margin-left: auto;
  width: 20px;
  height: 1px;
  background: #fff;
}

footer {
  padding-bottom: 12px;
  bottom: 0;
}

.footer__links {
  text-align: center;
  list-style-type: none;
}
.footer__links li {
  display: inline-block;
}
.footer__links li:nth-of-type(n+2) {
  margin-left: 12px;
}
.footer__links a {
  padding: 8px 0;
  display: block;
  width: 41px;
  text-align: center;
  color: #fff;
  border: 1px solid;
  border-radius: 50%;
  transition: opacity 0.235s ease-in-out;
}
.footer__links a:hover {
  opacity: 0.5;
}
.footer__links .fa {
  vertical-align: middle;
  font-size: 21px;
}

.logo
{
  width: 300px;
}