Code CSS

div.in-mobile>p {
  font-size : 16px;
}

div.pdp-fieldset__size-label {
  font-size : 24px;
}

#pdp-fit-assist {
  line-height : 20px !important;
  font-size : 18px !important;
}

li.description>p:nth-of-type(1)>strong,
li.description>p:nth-of-type(2)>strong,
li.description>p:nth-of-type(3)>strong,
li.description>p:nth-of-type(4)>strong,
li.description>p:nth-of-type(5)>strong {
  font-size : 24px;
}

div.inline-cart__items-container>div:nth-of-type(1)>div:nth-of-type(1)>h4,
div.inline-cart__items-container>div:nth-of-type(2)>div:nth-of-type(1)>h4 {
  font-size : 18px;
  line-height : 20px;
}

div.inline-cart__items-container>div:nth-of-type(1)>div:nth-of-type(1)>h5,
div.inline-cart__items-container>div:nth-of-type(2)>div:nth-of-type(1)>h5 {
  font-size : 16px;
}

div.inline-cart__items-container>div:nth-of-type(1)>div:nth-of-type(1)>div>div,
div.inline-cart__items-container>div:nth-of-type(2)>div:nth-of-type(1)>div>div {
  font-size : 18px;
  font-weight : bold;
}

div.inline-cart__items-container>div:nth-of-type(1)>div:nth-of-type(2)>button,
div.inline-cart__items-container>div:nth-of-type(2)>div:nth-of-type(2)>button {
  font-size : 18px;
}

a.inline-cart__btn {
  line-height : 30px;
}

div.inline-cart__total-amount-title {
  font-size : 22px;
}

div.inline-cart__total-amount {
  font-weight : bold;
  font-size : 22px;
}

div.inline-cart__footer-info {
  font-size : 18px;
}

h3.inline-cart__header {
  font-size : 20px;
}

#pdp--title>p>span {
  font-size : 26px;
  font-weight : bold;
  line-height : 30px;
}

#pdp--details>div:nth-of-type(2)>div {
  font-size : 18px;
}

#pdp--details>p {
  font-size : 16px;
}

div.title-price>p>span {
  font-weight : bold !important;
  font-size : 26px !important;
  line-height : 30px !important;
}

div.inline-cart__items-container>div:nth-of-type(2)>div:nth-of-type(2)>div>input,
div.inline-cart__items-container>div:nth-of-type(1)>div:nth-of-type(2)>div>input  {
  font-weight : bold;
}


fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(1),
fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(2),
fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(5),
fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(6),
fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(7),
fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(4),
fieldset.pdp-fieldset>div:nth-of-type(1)>a:nth-of-type(3){
  font-weight : bold !important;
}



/********Mobile Screen*******/

@media screen and (max-width: 500px) {
  div.pdp-fieldset__size-label{
    font-size: 20px;
  }

  #pdp-fit-assist {
    font-size : 16px !important;
  }

  li.description>p:nth-of-type(1)>strong,
  li.description>p:nth-of-type(2)>strong,
  li.description>p:nth-of-type(3)>strong,
  li.description>p:nth-of-type(4)>strong,
  li.description>p:nth-of-type(5)>strong {
    font-size : 18px!important;
  }

  a.inline-cart__btn {
    line-height: 35px !important;
  }

 div.inline-cart__total-amount-title {
    font-size : 19px !important;
  }

 div.inline-cart__total-amount {
   font-weight : bold;
   font-size : 19px !important;
 }

 div.title-price>p>span {
  font-size : 24px !important;
  line-height : 26px !important;
}
}


@media screen and (max-width: 768px){
  a.inline-cart__btn{
    line-height: 36px !important;
  }
}

@media screen and (min-width: 956px){
  a.inline-cart__btn {
    line-height: 18px;
  }
}