styles.css

@import url('https://fonts.googleapis.com/css?family=Press+Start+2P');

body {
  margin: 0;
  font-family: 'Press Start 2P', cursive;
  font-size: 2em;
  color: white;
}
button {
  outline: none;
  cursor: pointer;
  border: none;
  box-shadow: 3px 5px 0px 0px rgba(0,0,0,0.75);
}
#counter {
  position: absolute;
  top: 60px;
  left: 20px;
}
#end {
  position: absolute;
  min-width: 100%;
  min-height: 120%;
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
}

/* CSS */
.button-6 {
 
  background-color: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: .25rem;
  box-shadow: rgba(0, 0, 0, 0.02) 0 1px 3px 0;
  box-sizing: border-box;
  color: rgba(0, 0, 0, 0.85);
  cursor: pointer;
  display: inline-flex;
  font-family: system-ui,-apple-system,system-ui,"Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size: 16px;
  font-weight: 600;
 
  line-height: 1.25;
  
  min-height: 3rem;
  padding: calc(.875rem - 1px) calc(1.5rem - 1px);
  position: relative;
  text-decoration: none;
  transition: all 250ms;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  z-index: 100;
  width: auto;
  float: right;
  top: 60px;
}

.button-6:hover,
.button-6:focus {
  border-color: rgba(0, 0, 0, 0.15);
  box-shadow: rgba(0, 0, 0, 0.1) 0 4px 12px;
  color: rgba(0, 0, 0, 0.65);
}

.button-6:hover {
  transform: translateY(-1px);
}

.button-6:active {
  background-color: #F0F0F1;
  border-color: rgba(0, 0, 0, 0.15);
  box-shadow: rgba(0, 0, 0, 0.06) 0 2px 4px;
  color: rgba(0, 0, 0, 0.65);
  transform: translateY(0);
}




#end button {
  background-color: red;
  padding: 20px 50px 20px 50px;
  font-family: inherit;
  font-size: inherit;
}
#controlls {
  position: absolute;
  min-width: 100%;
  min-height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}



#controlls div {
  display: grid;
  grid-template-columns: 50px 50px 50px;
  grid-template-rows: auto auto;
  grid-column-gap: 10px;
  grid-row-gap: 10px;
  margin-bottom: 20px;
}
#controlls button {
  width: 100%;
  background-color: white;
  border: 1px solid lightgray;
}
#controlls button:first-of-type {
  grid-column: 1/-1;
}