Answers for "centering somehting in cs"

center with css

.parent {
  position: relative;
}
.child {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

css centering

// grid

.parent { 
  display: flex;
  align-items: center;
  justify-content: center;
}

//flex box

.parent { 
  display: flex;
  align-items: center;
  justify-content: center;
}

// position

.parent { 
  position: relative;
}

.child {
  position: absolute;
  left: 50%;
  right: 50%;
  transform: translate(-50%, -50%);
}