*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  display: flexbox;
  font-family: sans-serif;
  background-color: #c7d5e4;
}

header {
  justify-content: space-between;
  display: flex;
}
header h4 {
  margin-left: 15px;
}
header #timer {
  margin-right: 15px;
}

#start-screen {
  margin-top: 5%;
  display: flexbox;
  justify-content: center;
}

#start-screen h1 {
  text-align: center;
}

#start-screen p {
  line-height: 25px;
  margin-left: 35%;
  font-size: 20px;
  width: 30%;
  text-align: center;
}

#start-screen button {
  font-size: 20px;
  color: #c7d5e4;
  background-color: #088138;
  margin: 0;
  position: absolute;
  margin-top: 15px;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

#questions {
  display: none;
  margin-top: 5%;
  justify-content: flex-start;
}

#questions h1 {
  width: 45%;
  display: flex;
  margin-left: 30%;
}

.choice {
  display: flex;
  font-size: 20px;
  color: #c7d5e4;
  background-color: #088138;
  position: relative;
  margin-top: 15px;

  left: 28.5%;
}

#end-screen {
  margin-top: 5%;
  display: none;
}

#end-screen #title {
  text-align: center;
}

#end-screen #user-score {
  font-size: 20px;
  text-align: center;
}

.credentials {
  margin-left: 41%;
  align-content: center;
  display: inline-flexbox;
}

.credentials #enter {
  display: inline-flex;
  font-size: 15px;
}

.credentials button {
  color: #c7d5e4;
  background-color: #088138;
}

.highscore-page {
  margin-top: 10%;
  display: flexbox;
  align-content: center;
}

.highscore-page h1 {
  font-size: 35px;
  text-align: center;
}

.highscore-page #highscores {
  margin-left: 42.3%;
}

#highscores li {
  list-style: none;
  width: 25%;
  padding-left: 15px;
  border-top: 2px solid black;
}

.highscore-page #buttons {
  text-align: center;
}

.highscore-page button {
  font-size: 15px;
  color: #c7d5e4;
  background-color: #088138;
  margin-left: 10px;
}

a {
  color: #088138;
  text-decoration: none;
}

a:link::before,
a:link::after {
  color: #088138;
}