* {
  margin: 0;
  padding: 0;
}

body {
  background-color: black;
}

.container {
  border-top: 5px solid black;
  border-bottom: 5px solid black;
  padding: 5% 23% 12.1%;
  background-image: linear-gradient(to bottom right, rgb(255, 0, 0), rgb(255, 193, 77), lightgreen, rgb(42, 253, 253), rgb(119, 158, 255), rgb(0, 72, 255) );
  animation: gradientEffect 4s linear infinite alternate;
  background-size: 200% 200%;
  margin: auto;
  text-align: center;
  height: 100vh;
}

h1 {
  text-align: center;
  font-family: monospace, sans-serif;
  font-size: 40px;
  margin: 50px;
}

h1:hover {
  color: rgb(113, 113, 113);
}

h1:active {
  color: red;
}

#color-palette {
  display: flex;
  justify-content: center;
  margin: 25px;
}

.color {
  margin: 5px;
  height: 50px;
  width: 50px;
  border: 1px solid black;
  border-radius: 25%;
}

#colorBlack {
  background-color: black;
}

#colorRed {
  background-color: red;
}

#colorGreen {
  background-color: green;
}

#colorBlue {
  background-color: blue;
}

#container-button {
  margin-top: 2%;
  margin-bottom: 2%;
}

#clear-board {
  width: 75px;
  height: 25px;
  font-size: small;
  font-family: monospace, sans-serif;
}

#clear-board:active {
  background-color: red;
  color: white;
}

#board-size {
  text-align: center;
  width: 45px;
  height: 30px;
}

#generate-board {
  width: 45px;
  height: 30px;
  margin-right: 10px;
}

#generate-board:active {
  background-color: red;
  color: white;
}

#main {
  line-height: 0;
}

.pixel {
  display: inline-block;
  height: 40px;
  width: 40px;
  border: 1px solid black;
  background-color: white;
}

.selected {
  transform: translateY(-7px);
}

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

@keyframes gradientEffect {

  from { background-position: 0 0;}

  to { background-position: 100% 100%;}
}

/* 
background: url('mario-pixel-art.gif') no-repeat center center fixed;
  background-size: cover; */