css - Wave (or shape?) with border on CSS3

Question

I need to implement a wave shape with CSS3, I tried to implement with CSS3 Shapes, but I has not reached the desired result.

* {
  margin: 0;
  padding: 0;
}
body {
  background: #007FC1;
}
.container,
.panel {
  border-bottom: 4px solid #B4CAD8;
}
.container {
  background-color: #fff;
}
.container > .text {
  padding: 0.5em;
}
.panel {
  position: relative;
  float: right;
  width: 200px;
  height: 40px;
  margin-top: -4px;
  background-color: #fff;
  line-height: 42px;
  text-align: center;
}
.panel:before {
  content: '';
  position: absolute;
  left: -44px;
  width: 0;
  height: 0;
  border-top: 44px solid #B4CAD8;
  border-left: 44px solid transparent;
}

<div class="container">
  <div class="text">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Voluptates nam fuga eligendi ipsum sed ducimus quia adipisci unde atque enim quasi quidem perspiciatis totam soluta tempora hic voluptatem optio perferendis.</p>
  </div>
</div>
<div class="panel">this is a panel</div>

Answer 1

You could use svg instead of .panel(div) and float it to the right.

body {
  background: #007FC1;
}
.container {
  border-bottom: 4px solid #B4CAD8;
}
.container {
  background-color: #fff;
  z-index: -1;
}
.container > .text {
  padding: 0.5em;
}
.panel {
  position: relative;
  float: right;
  margin-top: -4px;
}

<div class="container">
  <div class="text">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Voluptates nam fuga eligendi ipsum sed ducimus quia adipisci unde atque enim quasi quidem perspiciatis totam soluta tempora hic voluptatem optio perferendis.</p>
  </div>
</div>
<svg class="panel" width="200" height="54">
  <path d="M0,0 h7 q9,3 12.5,10 l13,30 q3.2,10 13,10 h157 v-50z" fill="white" />
  <path transform="translate(0, -0.5)" d="M0,2 h7 q10,2 13,10 l13,30 q3,9 13,10 h157" fill="none" stroke="#B4CAD8" stroke-width="4" />
  <text x="110.5" y="25" text-anchor="middle">This is a panel</text>
</svg>