body {
  min-height: 100vh;
  margin: 0;
  box-sizing: border-box;
  position: relative;
  padding-bottom: 20vh;
}

header {
  background-color: #24252a;
  padding: 30px 10%;
  display: flex;
  justify-content: space-around;
  align-items: center;
  align-content: center;
  text-decoration: none;
}
header h1 {
  margin: 0;
  position: relative;
}
header h1 ::before {
  content: " ";
  position: absolute;
  background-color: rgba(255, 255, 255, 0);
  transition: 1s;
  top: -2px;
  left: -2px;
  width: 0px;
  height: 0px;
  border: 2px solid transparent;
}
header h1 :hover::before {
  animation: border_top_right 0.75s linear forwards;
}
header h1 ::after {
  content: " ";
  position: absolute;
  background-color: rgba(255, 255, 255, 0);
  transition: 1s;
  top: -2px;
  left: -2px;
  width: 0px;
  height: 0px;
  border: 2px solid transparent;
}
header h1 :hover::after {
  animation: border_bottom_left 0.75s linear forwards;
}
header h1 a {
  color: #edf0f1;
  text-decoration: none;
  font-family: sans-serif;
  letter-spacing: 0px;
  padding: 5px;
}
header h1 a .word1 {
  color: #929395;
}
header h1 a .word2 {
  color: silver;
}
header h1 a .word3 {
  color: #edf0f1;
}
header ul {
  list-style-type: none;
  display: flex;
  justify-content: space-around;
  text-align: center;
}
header a:not(._title) {
  padding: 1em 2em;
  text-decoration: none;
  color: #edf0f1;
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
}
header a:not(._title):hover {
  color: #24252a;
  background-color: #edf0f1;
  font-weight: 800;
  transition: 0.2s;
}
@keyframes border_top_right {
  0% {
    width: 0;
    height: 0;
    border-top-color: white;
    border-right-color: transparent;
    border-bottom-color: transparent;
    border-left-color: transparent;
  }
  25% {
    width: 100%;
    height: 0;
    border-top-color: white;
    border-right-color: white;
    border-bottom-color: transparent;
    border-left-color: transparent;
  }
  100% {
    width: 100%;
    height: 100%;
    border-top-color: white;
    border-right-color: white;
    border-bottom-color: transparent;
    border-left-color: transparent;
  }
}
@keyframes border_bottom_left {
  0% {
    width: 0;
    height: 0;
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
    border-left-color: white;
  }
  75% {
    width: 0;
    height: 100%;
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: white;
    border-left-color: white;
  }
  100% {
    width: 100%;
    height: 100%;
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: white;
    border-left-color: white;
  }
}

footer {
  position: absolute;
  bottom: 0;
  right: 0;
  left: 0;
  text-align: center;
  background-color: #24252a;
  color: #edf0f1;
  font-family: "Montserrat", sans-serif;
  font-weight: 500;
  padding: 3vh 0;
}
footer a {
  color: white;
}