* {
  margin: 0; padding: 0;
  text-decoration: none;
  box-sizing: border-box;
}


body {
  text-decoration: none;
  background-color:  #438160;
}

.container {
  display: flex;
}


.grid {
  width: 200px;
  height: 400px;
  display: flex;
  flex-wrap: wrap;
  background-color: #80DEAD;
  border-radius: 3px;
}

.grid div {
  height: 20px;
  width: 20px;
}

.tetromino {
  background-color: blue;
}


.mini-grid {
  margin-left: 50px;
  width: 80px;
  height: 80px;
  display: flex;
  flex-wrap: wrap;
  background-color: #54ac7e;
  border-radius: 10px;
}

.mini-grid div {
  height: 20px;
  width: 20px;
}


header {
  font-family: sans-serif;
  position: fixed;
  top: 0; left: 0; right: 0;
  background: #09365f;
  box-shadow: 0 5px 10px #000; 
  padding: 20px 7%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
}

header .logo {
  font-size: 25px;
  font-weight: bolder;
  color: #a3ff7b;
}

header .navbar ul {
  list-style:none;
}

header .navbar ul li {
  position:relative;
  float:left;
  transition: 0.3s;
}

header .navbar ul li ul {
  position: absolute;
  left: 0;
  width: 200px;
  background: #174362;
  display: none;
  transition: 0.3s;
}

header .navbar ul li a {
  font-size: 20px;
  padding: 20px;
  color: white;
  display: block;
  transition: 0.2s;
}

header .navbar ul li a:hover {
  color: white;
  background: #113249;
  padding: 21px;
}

header .navbar ul li:hover > ul {
  display: initial;
  transition: 0.3s;
}

.logou {
  font-size: 10px;
}