LONDON — European shares closed higher Tuesday afternoon, attempting to recover from a brutal sell-off in the previous session, despite concerns over a new coronavirus strain in the U.K.The pan-European Stoxx 600 provisionally closed 1.3% higher, with Germany’s DAX and France’s CAC indexes rising around 1.3% and 1.6% respectively. Britain’s FTSE 100 closed 0.5% up after initially falling. Banking stocks were among the top gainers, up 1.8%, with Barclays and Lloyds both climbing over 3% to lead the sector. Elsewhere, technology was up 2.5% as European markets closed.European markets came under heavy selling pressure Monday amid concerns over a fast-spreading Covid mutation that was first identified in Britain. The new variant forced the U.K. government to shut down London and other parts of southeast England and backtrack on the mixing of households over the Christmas break.The variant, which scientists say is up to 70% more transmissible than previous strains in the U.K., has also been identified in Italy, Netherlands, Belgium, Denmark and Australia. It has caused multiple countries around the world to shut their borders to Britain, disrupting travel and raising concerns over potential food shortages as the Brexit transition deadline nears.Meanwhile, the U.K. and EU remain deadlocked over post-Brexit trade relations as the Dec. 31 deadline approaches, with disputes over issues such as fisheries plaguing talks. British Prime Minister Boris Johnson said Monday that the country could still crash out without a deal.”The position is unchanged, there are problems,” British Prime Minister Boris Johnson told reporters Monday. “It’s vital that everybody understands that the U.K. has got to be able to control its own laws completely and also that we’ve got to be able to control our own fisheries.””It remains the case that WTO terms would be more than satisfactory for the U.K. and we can certainly cope with any difficulties that are thrown in our way.”Sterling extended Monday’s losses on Tuesday, falling another 1% to around $1.33.Official data showed U.K. GDP grew by a record 16% in the third quarter, but that still didn’t make up for an 18.8% decline in the previous quarter when much of the economy was shut down.On Wall Street, major U.S. stock indexes opened around the flatline as a litany of Covid-related headlines kept a lid on an otherwise impressive fourth-quarter rally.The Dow Jones Industrial Average opened just lower, down 40 points, or about 0.15%. Losses in Visa, Nike and 3M more than offset gains in Boeing, Apple and Salesforce.The muted move came as Congress on Monday night passed a coronavirus relief and government spending package. The bill now goes to President Donald Trump’s desk.Looking at individual shares, British supermarket stocks were under pressure Tuesday after they warned that disruption from international travel bans could lead to gaps on shelves. Sainsbury fell by 1.1% while Tesco and B&M European hovered around the flatline.