.phone_button {
    position: absolute;
    top: 10%;
    left: 79%;
    z-index: 2;
    width: 3%;
}

@media screen and (max-width: 640px) {
    .phone_button {
        top: 90%;
        left: 78%;
        width: 12%;
    }

    .element_choice {
        margin-left: 10%!important;
    }

    .bottom_icon {
        width: 20%;
        position: absolute;
    }

    .first_icon {
        top: 97%;
        left: 20%;
    }

    .second_icon {
        top: 97%;
        left: 40%;
    }

    .third_icon {
        top: 97%;
        left: 60%;
    }

    .value_send {
        margin-left: 30%;
    }
  }