<div class="container">
  <div class="sidebar">
  </div>
  <div class="konten">
    <div class="navbar">
    </div>
    <h2 class="sapa">
      Selamat datang
    </h2>
    <div class="row">
      <div class="column">
        <div class="card">
        </div>
      </div>
      <div class="column">
        <div class="card">
        </div>
      </div>
      <div class="column">
        <div class="card">
        </div>
      </div>
      <div class="column">
        <div class="card">
        </div>
      </div>
    </div>
    <div class="row">
      <div class="big-column">
        <div class="card">
          
        </div>
      </div>
    </div>
  </div>
</div>
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.container {
  display: flex;
  width: 100%;
  height: 600px;
}

.sidebar {
  width: 200px;
  height: 100%;
  background-color: blue;
}

.konten {
  width: calc(100% - 200px);
  height: 100%;
  background-color: rgb(230,230,230);
}

.navbar {
  width: 100%;
  height: 70px;
  background-color: red;
}

.sapa {
  margin-top: 20px;
  padding-left: 20px;
}

.row {
  margin-top: 30px;
  width: 100%;
  display: flex;
}

.column {
  width: 25%;
  padding: 0 15px;
}

.card {
  width: 100%;
  height: 200px;
  background-color: green;
}

.big-column {
  width: 100%;
  padding: 0 15px;
}

External CSS

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External JavaScript

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