vue-form-wizard/src/assets/tab-wizard/_navs-pagination.scss

.nav-pills {
    position: relative;
    top: 40px;
    text-align: center;
    display:flex;
    flex-wrap:wrap;
    li,a{
      flex:1;
      align-items: center;
      flex-wrap:wrap;
      flex-grow: 1;
    }
    a{
      display:flex;
    }
    > li + li {
        margin-left: 0;
    }
    > li > a {
        padding: 0;
        max-width: 78px;
        margin: 0 auto;
        color: $form-placeholder-color;
        border-radius: 50%;
        position: relative;
        top: -32px;
        z-index: 100;

        &:after{
            content: '';
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: inline-block;
            position: absolute;
            right: -1px;
            top: -4px;
            transform: scale(0);
            transition: .2s all linear;
        }

        &:hover,
        &:focus{
            background-color: transparent;
            color: $form-placeholder-color;
            outline: 0 !important;
            cursor: pointer;
        }
    }

    > li.active > a{

        &:after{
            content: '';
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: inline-block;
            position: absolute;
            right: 5px;
            top: -2px;
            @include scale(1);
            @include transition(.2s, linear);
        }


    }

    > li.active > a,
    > li.active > a:hover,
    > li.active > a:focus {
        background-color: transparent;
        font-size: 15px;
        @include transition-font-size(.2s, linear);


        [class*="ti-"]{
            color: $white-color;
            font-size: 24px;
            top: 21px;
            @include transition(.2s, linear);
        }
    }
}