CSS Centralize DIV

3 Lines CSS Centralize div

<div class="parent">
  <div class="child"></div>
</div>
Code language: HTML, XML (xml)

.parent {
  width: 100%;
  height: 250px;
  border: 1px solid grey;
  display: flex;
  align-items: center;
  justify-content: center;
}
.child {
  width: 50px;
  height: 50px;
  background: brown;
}
Code language: CSS (css)

---

2 Lines CSS Centralize div

<div class="parent">
  <div class="child"></div>
</div>
Code language: HTML, XML (xml)

.parent {
  width: 100%;
  height: 250px;
  border: 1px solid grey;
  display: grid;
  place-items: center;
}
.child {
  width: 50px;
  height: 50px;
  background: lightgreen;
}
Code language: CSS (css)

---

Using CSS Position

<div class="parent">
  <div class="child"></div>
</div>
Code language: HTML, XML (xml)

.parent {
  width: 100%;
  height: 250px;
  border: 1px solid grey;
    
  position: relative;
}

.child {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  background: orange;
}
Code language: CSS (css)

---

Hope this help you 🙂