Generated by SassMeister.com.

SassMeister-input-HTML.html

<ul class="mandate-overview">
    <li class="mandate-overview__circle"><span class="mandate-overview__party">V</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">S</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">MP</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">SD</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">PP</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">JL</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">C</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">FP</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">KD</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">M</span></li>
</ul>

SassMeister-input.scss

// ----
// Sass (v3.3.6)
// Compass (v1.0.0.alpha.18)
// ----

.mandate-overview {
    list-style: none;
    max-width: 350px;
}
 
$max-size: 300px;
$mandate-size: $max-size/349;
@mixin mandate($nr-of-mandate) {
  $size_0: $mandate-size*$nr-of-mandate;
  width: $size_0;
  height: $size_0;
}
.mandate-overview__circle {
    border-radius: 100%;
    display: table;
    vertical-align: middle;
    background-color: red;
    margin: 5px;
    float:left;
    box-sizing: border-box;
    
    &:nth-child(1) {
      @include mandate(19);
    }
    &:nth-child(2) {
      @include mandate(112);
    }
    &:nth-child(3) {
      @include mandate(25);
    }
    &:nth-child(4) {
      @include mandate(20);
    }
    &:nth-child(5) {
      @include mandate(0);
      display:none;
    }
    &:nth-child(6) {
      @include mandate(0);
      display: none;
    }
    &:nth-child(7) {
      @include mandate(23);
    }
    &:nth-child(8) {
      @include mandate(24);
    }
    &:nth-child(9) {
      @include mandate(19);
    }
    &:nth-child(10) {
      @include mandate(107);
    }
    &:nth-child(2n + 1) {
      margin-top: 25px;
    }
}
.mandate-overview__party {
  display: table-cell;
  vertical-align: middle;
  width: 100%;
  height: 100%;
  text-align: center;
}

SassMeister-output.css

.mandate-overview {
  list-style: none;
  max-width: 350px;
}

.mandate-overview__circle {
  border-radius: 100%;
  display: table;
  vertical-align: middle;
  background-color: red;
  margin: 5px;
  float: left;
  box-sizing: border-box;
}
.mandate-overview__circle:nth-child(1) {
  width: 16.33238px;
  height: 16.33238px;
}
.mandate-overview__circle:nth-child(2) {
  width: 96.27507px;
  height: 96.27507px;
}
.mandate-overview__circle:nth-child(3) {
  width: 21.48997px;
  height: 21.48997px;
}
.mandate-overview__circle:nth-child(4) {
  width: 17.19198px;
  height: 17.19198px;
}
.mandate-overview__circle:nth-child(5) {
  width: 0px;
  height: 0px;
  display: none;
}
.mandate-overview__circle:nth-child(6) {
  width: 0px;
  height: 0px;
  display: none;
}
.mandate-overview__circle:nth-child(7) {
  width: 19.77077px;
  height: 19.77077px;
}
.mandate-overview__circle:nth-child(8) {
  width: 20.63037px;
  height: 20.63037px;
}
.mandate-overview__circle:nth-child(9) {
  width: 16.33238px;
  height: 16.33238px;
}
.mandate-overview__circle:nth-child(10) {
  width: 91.97708px;
  height: 91.97708px;
}
.mandate-overview__circle:nth-child(2n + 1) {
  margin-top: 25px;
}

.mandate-overview__party {
  display: table-cell;
  vertical-align: middle;
  width: 100%;
  height: 100%;
  text-align: center;
}

SassMeister-rendered.html

<ul class="mandate-overview">
    <li class="mandate-overview__circle"><span class="mandate-overview__party">V</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">S</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">MP</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">SD</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">PP</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">JL</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">C</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">FP</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">KD</span></li>
    <li class="mandate-overview__circle"><span class="mandate-overview__party">M</span></li>
</ul>