Ce este astrofizica și la ce folosește?

#iguru_soc_icon_wrap_69c24dfadf2c5 a{ background: transparent; }#iguru_soc_icon_wrap_69c24dfadf2c5 a:hover{ background: transparent; border-color: #7cbc61; }#iguru_soc_icon_wrap_69c24dfadf2c5 a{ color: #7cbc61; }#iguru_soc_icon_wrap_69c24dfadf2c5 a:hover{ color: #ffffff; }.iguru_module_social #soc_icon_69c24dfadf2f31{ color: #ffffff; }.iguru_module_social #soc_icon_69c24dfadf2f31:hover{ color: #7cbc61; }.iguru_module_social #soc_icon_69c24dfadf2f31{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_69c24dfadf2f31:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_69c24dfadf3082{ color: #ffffff; }.iguru_module_social #soc_icon_69c24dfadf3082:hover{ color: #7cbc61; }.iguru_module_social #soc_icon_69c24dfadf3082{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_69c24dfadf3082:hover{ background: rgba(255,255,255,0.01); }