How can I recreate this navigation bar using HTML and CSS?

Question

.header {
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2;
  opacity: 1;
  display: flex;
  flex-direction: row;
}

.nav-bar {
  background-color: var(--nav-color );
  box-sizing: border-box;
  text-align: center;
  height: 43px;
  margin: 8px;
  overflow: hidden;
  border: 1.5px solid #000000;
}
.first {
  position: relative;
  z-index: 4;
  width: 106px;
  border-radius: 15px;
}
.second {
  width: 100px;
  position: relative;
  left: -29px;
  z-index: 3;
  border-radius: 0 15px 15px 0;
}
.third {
  width: 100px;
  position: relative;
  left: -60px;
  z-index: 2;
  border-radius: 0 15px 15px 0;
}

<!--===== HEADER =====-->
  <header class="header">
    <!--===== NAV-BAR =====-->
    <a href=#home class="nav-bar first"><span class="nav-bar-title">Home</span></a>
    <a href=#about class="nav-bar second"><span class="nav-bar-title">About</span></a>
    <a href=#more class="nav-bar third"><span class="nav-bar-title">More</span></a>
</header>

navigation bar in Realme file manager

I want to get triangular shaped right edges, tell me how can I recreat it.

Share if there is any template for similar looking navigation bar.

The snippet contains the HTML and CSS code of my version,

Answer 1

Perhaps you can make use of some conic-gradient():

#breadcrumb {
  display: flex;
  background: #f6ede4;
}

.item {
  padding: 1em 3em 1em 2em;
  background-image:
    conic-gradient(
      from 210deg at calc(100% - 1em) 50%,
      #f6ede4 120deg,
      transparent 120deg
    ),
    conic-gradient(
      from 210deg at 100% 50%,
      #ffffff 120deg,
      transparent 120deg
    );
}

<div id="breadcrumb">
  <div class="item">Phone storage</div>
  <div class="item">Download</div>
  <div class="item active">Apps</div>
</div>

...or some mask on a pseudo-element:

#breadcrumb {
  display: flex;
  background: #f6ede4;
}

.item {
  position: relative;
  padding: 1em 2em;
}

.item::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: calc(100% + 1em);
  background-image:
    conic-gradient(
      from 210deg at calc(100% - 1em) 50%,
      #f6ede4 120deg,
      transparent 120deg
    ),
    conic-gradient(
      from 210deg at 100% 50%,
      #ffffff 120deg,
      transparent 120deg
    );
  -webkit-mask: conic-gradient(
    from 180deg at calc(100% - 2em) 50%,
    transparent 180deg,
    #000 180deg
  );
  mask: conic-gradient(
    from 180deg at calc(100% - 2em) 50%,
    transparent 180deg,
    #000 180deg
  );
}

<div id="breadcrumb">
  <div class="item">Phone storage</div>
  <div class="item">Download</div>
  <div class="item active">Apps</div>
</div>