I am new to HTML CSS, can anyone tell me what am I doing wrong?

```css
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --pink: #ff6161;
  --white: #fff;
  --black: #292828;
  --font: "Roboto", sans-serif;
}

header {
  min-height: 100px;
  max-width: 100%;
  background-color: var(--pink);
  display: flex;
  justify-content: center;
  align-items: center;
}

.menu {
  max-width: 10rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.menu-items {
  list-style-type: none;
  padding-right: 30px;
  font-family: var(--font);
  font-size: 20px;
}

.menu-items a {
  text-decoration: none;
  color: var(--black);
}

.search-bar {
  width: 700px;
}

.inp {
  width: 100%;
  height: 2rem;
}
```

```html
<header>
  <div class="search-bar">
    <input class="inp" type="text" />
  </div>
  <ul class="menu">
    <i class="fa-solid fa-house"></i>
    <li class="menu-items"><a href="#"> Home</a></li>
    <i class="fa-solid fa-store"></i>
    <li class="menu-items"><a href="#">Store</a></li>
    <i class="fa-solid fa-headset"></i>
    <li class="menu-items"><a href="#">Support</a></li>
  </ul>
</header>
```